

Īt launch, Mercedes-Benz claimed the vehicle was the most aerodynamic in its segment, with a Cd figure of 0.29.

Orders had been taken beginning from the end of November 2013, and arrived in dealer showrooms during 2014, with Japan and US in the autumn. The production X156 GLA-Class is closely based on the Concept GLA design and was unveiled at the 2013 Frankfurt Motor Show. The 2016 Concept GLA 45 AMG with an AMG 2.0-litre four-cylinder twin-scroll turbocharged petrol engine rated 381 PS 375 hp (280 kW) and 475 N⋅m (350 lbf⋅ft), 4Matic all wheel drive, AMG Speedshift DCT 7-speed transmission with paddle shifters, and fitted with various AMG-badged accoutrements and an AMG sports exhaust system with an electronically controlled variable vane system to modulate the exhaust note.

The Concept GLA 45 AMG concept car was unveiled at the 2013 Los Angeles Auto Show, as a high-performance version of the GLA-Class with an AMG 2.0-litre four-cylinder twin-scroll turbocharged petrol engine rated 360 PS (265 kW 355 hp) and 450 N⋅m (332 lbf⋅ft), 4Matic all wheel drive, AMG Speedshift DCT 7-speed transmission with paddle shifters, and fitted with various AMG-badged accoutrements and an AMG sports exhaust system with an electronically controlled variable vane system to modulate the exhaust note. The concept included front headlamps with a laser-beam projector, two cameras housed in the front roof rail, 20-inch wheels and fibre-optic ambient interior lighting. The Concept GLA debuted in the 2013 Auto Shanghai and is powered by a 2.0-litre turbo petrol engine rated 211 PS (155 kW 208 hp), 7-speed dual clutch automatic transmission, driving all wheels via the Mercedes-Benz 4Matic system.
